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Rev. 1.10
9 of 20
August 12, 2020
HT32 MCU
Starter Kit User Manual
2 Hardware Layout
2 Hardware Layout
e-Link32 Lite Power Option – R8
R8
Description
Pin 1 on the CN2 connector on the e-Link32 Lite side is used as the input. The
reference voltage is supplied through this pin to the voltage conversion chip – default
setting
Note that if the e-Link32 Lite has not been separated, the 3.3V on the Target Board
will have been connected to CN2-1 through the PCB wire connection
Pin 1 on the CN2 connector on the e-Link32 Lite side is used as the output. Here the
e-Link32 Lite voltage conversion chip is fixed using 3.3V as the reference voltage.
Note that the 3.3V voltage on the Target Board has been connected to CN2-1
through the PCB wire connection, therefore this option is not allowed if the e-Link32
Lite has not been separated
Only the e-Link32 Lite V2.0 version has the R8 option.
e-Link32 Lite Power Option – J8
J8
Description
Pin 1 on the CN2 connector on the e-Link32 Lite side is used as the input. The
reference voltage is supplied through this pin to the voltage conversion chip – default
setting
Note that if the e-Link32 Lite has not been separated, the 3.3V on the Target Board
will be connected to CN2-1 through the S1 switch and the PCB wire connection
Pin 1 of the CN2 connector on the e-Link32 Lite side is used as the output. Here the
e-Link32 Lite voltage conversion chip is fixed using the 3.3V as the reference voltage
Note that the 3.3V on the Target Board will be connected to CN2-1 through the S1
switch and the PCB wire connection. If the e-Link32 Lite has not been separated,
users should switch the S1 to the OFF position to use this option
Only the e-Link32 Lite V2.2 or V2.3 version has the J8 option.
Boot Option – Located on the Board Reverse Side
R18
Description
1 or NC – MCU boots from main flash – default setting
0 – MCU boots from bootloader – ISP
High Speed External Crystal Oscillator (HSE) Option
R23 & R24
Description
Open, HSE I/O pins disconnected from CN4 – default setting
Short, HSE I/O pins connected to CN4 pins 9 and 10. Y2 must be removed.
The designators on the ESK32-30105 (HT32F12366 SK) are R21 and R22.